BABOOXS. 141 



a female hybrid produced by a cross between a female mandrill and a male of the 

 crab-eating macaque (Macacus cynomolgiis) 



The mandrill is strictly confined to the tropical parts of West Africa; the 

 Gabun district being perhaps its headquarters. 



THE DRILL (Cynocephalus leucophcem). 



Although described by Frederic Cuvier as far back as the year 1807 as a 

 distinct species, the West African baboon represented in the accompanying figure, 



THE DRILL (^ iiat. size). 



and known as the drill, had for many years previously, in spite of a figure given 

 by our countryman, Pennant, been considered to be merely the young of the 

 mandrill, which had not acquired the characteristic coloration of the face. The 

 acquisition of adult specimens of the drill by our museums and menageries proved, 

 however, the correctness of the English and French naturalists' determination. 

 It is exclusively West African, but its range in latitude appears to be somewhat 

 more extensive than that of the mandrill. 



